This is a collective volume with original studies on Byzantine philosophy, theology, and science in memoriam of Linos G. Benakis (ob. 2022), a pioneer in the study of Byzantine philosophy. Following the lines of Benakis’ research, which are nowadays taken for granted, the studies include critical editions of short Byzantine texts, offer a specific analysis of Byzantine philosophical ideas as in principle distinct from, but also contributing to, theology and a specific analysis of Byzantine texts of science. They also shed new light on the ancient Greek and Scholastic sources of Byzantine philosophical and theological writings.